雪腐格氏霉侵染小麦的环境因素  

Studies on Infection Condition of Gerlachia nivalis in Wheat

作　　者：康业斌[1] 商鸿生[2] 王树权 

机构地区：[1]洛阳农业高等专科学校 [2]西北农业大学

出　　处：《华北农学报》1996年第4期48-51,共4页Acta Agriculturae Boreali-Sinica

基　　金：国家"八五"攻关项目

摘　　要：室内试验表明，雪腐格氏霉（Ｇｅｒｌａｃｈｉａｎｉｖａｌｉｓ）侵染小麦的适宜温度为１７～２０℃，２０℃以上有利于病菌在寄主组织中扩展。相对湿度在９３％以上２～３天，病害就会普遍发生，持续时间越长，发病越严重。在２０℃及饱和湿度下，光强８０００～１００００ｌｘ，每天光照６ｈ，最适于病菌侵入和扩展。The experiment results showed that the optimum temperature for Gerlachia nivalis penetration is 17～20℃,and for disease development in tissure of the host is above 20℃.The infection occured above RH 93% in 2～3 days,and the longer the period sustained,the severer the disease occured.Under 20℃ and saturated humidity condition,when light intensity is 8000 10000lx,and lihgt controlled 6h every day,it is suitable for infect and extensive.Long time sustained light is not suitable for disease occured.

关 键 词：雪腐格氏霉 侵染条件 小麦 雪霉叶枯病 

分 类 号：S435.121.4[农业科学—农业昆虫与害虫防治]